# 90 Leo A
**Wikidata**: [Q66493209](https://www.wikidata.org/wiki/Q66493209)  
**Source**: https://4ort.xyz/entity/90-leo-a


## References

1. SIMBAD
2. A two-dimensionnal quantitative spectral classification of 283 O5-B7 stars and the construction of a spectrum-absolute magnitude diagram
3. Washington Double Star Catalog
4. The Tycho-2 catalogue of the 2.5 million brightest stars
5. Gaia Data Release 2
6. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
7. General Catalogue of Stellar Radial Velocities